September 20

What falls on September 20

• New York sales tax return due — quarterly filersOperator deadlineThe June 1 – August 31 quarter is due by the 20th. New York returns are filed no later than 20 days after the end of the period they relate to.Source: NYS Department of Taxation and Finance — Filing Requirements for Sales and Use Tax Returns — checked September 23, 2026
• National Fried Rice DayFood dayKwick365 publishes a Chicken fried rice index.Source: National Day Calendar — checked September 23, 2026
• Pepperoni Pizza DayFood dayKwick365 publishes Pizza slice and Large pizza indexes.Source: National Day Calendar — checked September 23, 2026

What the data showed

On September 20, 2026, 1,597 restaurants traded in store across 144,411 in-store orders and 769 restaurants took 11,895 online orders. Measured against the 4 nearest Sundays: the median restaurant took 15.5 online orders (8.7% more).

Computed from the readings for the most recent September 20 in the index, not from anything the calendar entry above claims. The entries say only what their own sources say; the numbers here are the only thing Kwick365 knows about how this date trades, and they are recomputed every night.

Kwick365 has published readings on 2 occurrences of September 20.

• September 20, 2026 Readings
• September 20, 2025 Readings

The rest of September

• September 5
  National Cheese Pizza DayFood dayKwick365 publishes Pizza slice and Large pizza indexes.Source: National Day Calendar — checked September 23, 2026
• September 7
  National Beer Lover's DayFood daySource: National Day Calendar — checked September 23, 2026
• September 15
  IRS employment tax deposit due — monthly depositorsOperator deadlineMonthly depositors deposit the employment taxes on wages paid during the previous month by the 15th day of the following month.Source: IRS — Employment tax due dates — checked September 23, 2026
• September 16
  National Guacamole DayFood daySource: National Day Calendar — checked September 23, 2026
• September 18
  National Cheeseburger DayFood dayKwick365 publishes a Burger (basic) index.Source: National Day Calendar — checked September 23, 2026
• September 25
  National Lobster DayFood daySource: National Day Calendar — checked September 23, 2026
• September 26
  National Dumpling DayFood daySource: National Day Calendar — checked September 23, 2026

  National Pancake DayFood daySource: National Day Calendar — checked September 23, 2026
• September 28
  National Drink Beer DayFood daySource: National Day Calendar — checked September 23, 2026
• September 29
  National Coffee DayFood dayKwick365 publishes a Coffee (regular drip) index.Source: National Day Calendar — checked September 23, 2026

The whole calendar · Methodology